package com.packa.www;
class Student {
    public String name;
    public int age;
    public static int classId;
    public static void eat() {
        System.out.println("正在吃饭");
    }

}
public class Test {
    public static void main(String[] args) {
        Student student = new Student();
        Student.eat();
        int a = 10;
        int b = 20;
        System.out.println("交换前a,b"+a+" "+b);
        a=a^b;
        b=a^b;
        a=a^b;
        System.out.println("交换后a,b"+a+" "+b);
        //& | ^
    }
}
